Problems from 2021 ICPC North America Regional Programming Contests (March 5 2022)

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Archery Accuracy0.018711433524%6.9Harden
Average Character0.0054541184741%2.0Easyen
Black and White0.0759243618242%5.0Mediumen
Circle Bounce0.0020022011050%4.9Mediumen
Diagonals0.0018532086732%7.2Harden
Dorm Room Divide0.03476168322013%6.8Harden
Double Password0.0054404254658%1.6Easyen
Fail Them All!0.0089947311524%8.1Harden
Hopscotch 5000.1187865714021%7.3Harden
Overdraft0.0053052125941%2.1Easyen
Problem Set Construction0.01940773545%6.9Harden
Reversibly Cyclic Strings0.00570731845%3.2Mediumen
Rise and Fall0.0088113027124%4.7Mediumen
Scaling Recipe0.005197490046%1.9Easyen
Shortest Missing Subsequences0.0939438912532%6.0Harden
Square Bounce0.005031685432%6.2Harden
Tetris Generation0.0090122730024%6.0Harden
Tournament Seeding0.0322051722944%4.0Mediumen
Tree Hopping0.02893103330730%6.3Harden
Who Goes There?0.00119129941232%4.0Mediumen
XOR Island0.0029131710533%7.1Harden